1. Name the parts of the human excretory system.
2. Why the right kidney is positioned slightly lower
than the left kidney?
3. In which part of the nephron does filtrate become
hypertonic to blood plasma?
4. What is ultrafiltration?
5. Which part of the nephron concentrates the urine?
Answers
Answer:
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Explanation:
1.They include the kidneys, large
intestine, liver, skin, and lungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes the ureters, bladder, and urethra.
2.In humans, the kidneys are located in the abdominal cavity. The right kidney is placed at a slightly lower level than the left kidney in order to accommodate the largest gland/organ of the body, the liver. The liver bulges out on the right side of the body and then, tapers off to the left.
3. fluid in the top of the loop of Henle is hypertonic with respect to glomerular filtrate b) glomerular filtrate is hypertonic with respect to the fluid in the distal convoluted tubule .
4.AnswersBiologyA LevelArticle
What is ultrafiltration?
Ultrafiltration is a process in the kidney by which urea, salt, water and glucose etc. is extracted from the blood. When blood passes through the top of the nephron, it enters a structure called the glomerulus which is a network of tiny capillaries. This causes the pressure to increase and fluid is forced through the "sieve-like" walls of the vessels into the Bowman's capsule. This fluid is called the filtrate. Blood cells and larger proteins do not pass through the capillaries as they are too large and so are not found in the filtrate. A large proportion what enters the filtrate is valuable to the body and so needs to be reabsorbed into the blood. This is a process called selective reabsorption.
5.The kidneys are able to separate the reabsorption of water and solutes in the loop of Henle, distal nephron and collecting ducts. This means urine can be made more concentrated or more dilute than plasma, depending on how hydrated you are.
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Answer:
Explanation:Hey can you please tell that from which book you asked this question?